React 19.2.7

Major Highlights

React 19.2.7 ships on June 1, 2026 as a targeted patch release focused on Server Action reliability, compiler maturity, and toolchain compatibility. This is a must-update for anyone using React Server Components or the React Compiler in production.

Server Actions Fix

The headline fix addresses missing FormData entries in Server Actions — a bug that caused form submissions to silently drop fields under certain streaming conditions. If you have been puzzled by disappearing form data in RSC-heavy apps, this is the patch you have been waiting for.

Compiler and Lint Improvements

React 19.2.7 adds ESLint v10 support out of the box, keeping the React ESLint plugin compatible with the latest linting ecosystem. The compiler now skips compilation for non-React files entirely, yielding faster build pipelines in mixed-codebase projects. Additionally, compiler lint rules have been sharpened with better auto-fix suggestions and fewer false positives.

Bug Bashes

• Fixed FormData entries missing in Server Action submissions
• Resolved a race condition in concurrent rendering of Suspense boundaries
• Patched memory leak in the reconciler when unmounting nested Portals
• Corrected TypeScript type exports for useActionState and useOptimistic

Upgrade at your own pace, but do not delay

The upgrade path from React 19.2.x is seamless — no breaking changes, no config migrations. Run npm install [email protected] [email protected] and you are good to go. If you are on React 18 or earlier, the 19.x migration guide has you covered.